CVE-2021-47289

In the Linux kernel, the following vulnerability has been resolved: ACPI: fix NULL pointer dereference Commit 71f642833284 ("ACPI: utils: Fix reference counting in for_each_acpi_dev_match()") started doing "acpi_dev_put()" on a pointer that was possibly NULL. That fails miserably, because that helper inline function is not set up to handle that case. Just make acpi_dev_put() silently accept a NULL pointer, rather than calling down to put_device() with an invalid offset off that NULL pointer.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/38f54217b423c0101d03a00feec6fb8ec608b12e	Patch
https://git.kernel.org/stable/c/cae3fa3d8165761f3000f523b11cfa1cd35206bc	Patch
https://git.kernel.org/stable/c/ccf23a0888077a25a0793a746c3941db2a7562e4	Patch
https://git.kernel.org/stable/c/fc68f42aa737dc15e7665a4101d4168aadb8e4c4	Patch
https://git.kernel.org/stable/c/38f54217b423c0101d03a00feec6fb8ec608b12e	Patch
https://git.kernel.org/stable/c/cae3fa3d8165761f3000f523b11cfa1cd35206bc	Patch
https://git.kernel.org/stable/c/ccf23a0888077a25a0793a746c3941db2a7562e4	Patch
https://git.kernel.org/stable/c/fc68f42aa737dc15e7665a4101d4168aadb8e4c4	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:5.14:rc1::::::
	cpe:2.3:o:linux:linux_kernel:5.14:rc2::::::

History

No history.

Information

Published : 2024-05-21 15:15

Updated : 2024-12-23 16:46

NVD link : CVE-2021-47289

Mitre link : CVE-2021-47289

CVE.ORG link : CVE-2021-47289

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-476

NULL Pointer Dereference

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